blackthorn branch bush England english flowers Great Britain natural nature petals Prunus shrub spring stamens Sussex tree white wild Cardamine pratensis Cruciferae Lady's smock mauve plant Cornus suecica Dwarf Cornel green herb leaf leaves montane norway norwegian rock Dandelion flower gold hedgerow macro photography organism petal pollen sow thistles weed yellow blue border delphiniums garden light pale perennial spikes summer bulbs colors colours hedge orange red topiary tulips daisies daisy eyes Leucanthemum meadow ox-eye abundant blossom cherry many numerous profusion rich